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From: bloom%ucbshadow@Berkeley (Jim Bloom)
Newsgroups: net.unix-wizards
Subject: Re: UNIX 4.2 thrashing - the cause?
Message-ID: <7664@brl-tgr.ARPA>
Date: Wed, 23-Jan-85 17:02:10 EST
Article-I.D.: brl-tgr.7664
Posted: Wed Jan 23 17:02:10 1985
Date-Received: Mon, 28-Jan-85 05:52:55 EST
Sender: news@brl-tgr.ARPA
Organization: Ballistic Research Lab
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The 10% is automatically left free for you by the system.  If one
examines the figures below, the sum of "used" "and" avail equals 
90% of the actual disk space listed under "kbytes".  Another 10%
free won't hurt performance, but I don't think that it gives too
much better improvement in the filesystems.  One probably wants
some extra space (1-2 Mbytes) free just for normal fluctuations.

					Jim Bloom
					ucbvax!bloom
					bloom@ucb-vax.arpa
> 
> Filesystem    kbytes    used   avail capacity  Mounted on
> /dev/hp0a       7421    6519     159    98%    /
> /dev/hp1h     137616  120835    3019    98%    /usr
> /dev/hp1g      74691   65354    1868    97%    /usr/spool
> /dev/hp2h     137616  120775    3079    98%    /va <- user area
> /dev/hp0g      38639   34747      28   100%    /vb <- user area
> /dev/hp2a       7429      30    6656     0%    /tmp
> /dev/hp2g      74691   62096    5126    92%    /UDS <- utilities
> --